Java 将数据写入全路径下的指定文件

 package com.freud.algorithm.other;

 import java.io.File;
 import java.io.FileOutputStream;

 public class WriteData {

     public static void main(String[] args) {

         writeToFile("aaa");
     }

     public static void writeToFile(String data) {

         byte[] sourceByte = data.getBytes();
         String path = "D:/file/";
         String fileName = "test.txt";
         if (null != sourceByte) {
             try {
                 File file = new File(path + fileName);//文件路径（路径+文件名）
                 if (!file.exists()) {   //文件不存在则创建文件，先创建目录
                     File dir = new File(file.getParent());
                     dir.mkdirs();
                     file.createNewFile();
                 }
                 FileOutputStream outStream = new FileOutputStream(file); //文件输出流将数据写入文件
                 outStream.write(sourceByte);
                 outStream.close();
             } catch (Exception e) {
                 e.printStackTrace();
                 // do something
             } finally {
                 // do something
             }
         }
     }
 }